Stage 2 summary at 50 accepted trajectories

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

tasks_gen/train/G1129/spec.md

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+# 1. Goal
+A school canteen bills the parents for the meals of one week. The billing
+program calls one function module for each week. The function module reads the
+meal bookings of the week and returns the number of charged meals, the number
+of pupils, the total amount, and the total discount.
+
+# 2. Open questions
+None.
+
+# 3. Context
+- The function group {{P}}FG_MEAL exists in package $TMP.
+- The database table {{P}}MEALBK exists in package $TMP. It contains the meal
+  bookings. Its fields are:
+  - mandt: the client
+  - week_key: the week of the booking, for example '2024-15'
+  - pupil: the pupil who booked the meal
+  - meal_no: the number of the booking inside the week
+  - meal: the kind of meal, for example 'LUNCH'
+  - price: the price of the meal
+  - cancelled: 'X' when the booking was cancelled, otherwise initial
+- The class {{P}}MEAL_DATA fills the table with sample bookings.
+
+# 4. Contract
+- Create the function module {{P}}MEAL_BILL in function group {{P}}FG_MEAL.
+- Interface of {{P}}MEAL_BILL:
+  - IMPORTING iv_week TYPE string
+  - EXPORTING ev_meals TYPE decfloat34
+  - EXPORTING ev_pupils TYPE decfloat34
+  - EXPORTING ev_amount TYPE decfloat34
+  - EXPORTING ev_discount TYPE decfloat34
+  - EXCEPTIONS invalid_price
+
+# 5. Business rules
+1. The function module reads the bookings of the given week. A booking belongs
+   to the week that is in its field week_key.
+2. A booking is charged when cancelled is not 'X' and price is greater than 0.
+3. If a booking of the week has a price less than 0, raise the exception
+   INVALID_PRICE.
+4. Each charged booking counts as one meal of its pupil.
+5. The gross amount of a pupil is the sum of the prices of the charged bookings
+   of the pupil.
+6. If a pupil has 5 or more charged meals, the amount of the pupil is 90 % of
+   the gross amount, rounded half up to 2 decimals. If a pupil has fewer than 5
+   charged meals, the amount of the pupil is the gross amount.
+7. ev_meals is the total number of charged meals of the week.
+8. ev_pupils is the number of pupils with at least one charged booking.
+9. ev_amount is the sum of the amounts of all pupils.
+10. ev_discount is the sum of the differences between the gross amount and the
+    amount of each pupil.
+11. If the week has no charged booking, all output parameters are 0.
+
+# 6. Constraints
+- Release target: 7.58.
+- Coding standards: Clean ABAP. Keep every method below 40 statements.
+- Out of scope: do not change {{P}}MEALBK and {{P}}MEAL_DATA.
+
+# 7. Acceptance
+- The function module {{P}}MEAL_BILL is active and has no syntax error.
+- The hidden tests pass.
+- Write ABAP Unit tests for the function module in a global test class.